Economic Growth

Economic growth and GDP

Gross domestic product (GDP) is the total value of all goods and services produced in a country in a year.

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Economic growth is an increase in real GDP.

Always say real GDP when discussing growth. A country whose nominal GDP rose 5% while inflation was 5% has not actually produced anything more.

GDP per capita matters because a country's total output can rise while output per person falls, if the population grows faster. That is why per capita figures are used to compare living standards.

What causes growth:

• More resources: a larger workforce, newly discovered raw materials.
• Better resources: education and training raising skills, new technology.
• Investment in machinery, factories and infrastructure.
• Higher demand: more spending by consumers, firms, government, or from exports.

The economic cycle

Economies do not grow at a steady rate. Output rises and falls around the long-term trend in a repeating pattern.

What drives the cycle: changes in confidence among consumers and businesses; changes in interest rates and the availability of credit; and outside shocks such as an oil price rise or a pandemic.

Benefits of growth

• Higher incomes and more goods and services, so living standards rise.
• More jobs, as firms expand and hire.
• Higher tax revenue without raising tax rates, letting the government fund schools, hospitals and infrastructure.
• Less poverty: growth is historically the main reason absolute poverty falls.
• More investment, as profitable firms buy new equipment, raising future output.
• Growth can fund environmental protection, since richer countries can afford cleaner technology.

Costs of growth

• Inflation, if demand grows faster than the economy can produce.
• Damage to the environment: pollution, congestion, loss of habitats.
• Using up non-renewable resources, leaving less for future generations.
• Inequality may widen if the gains go mainly to those who are already well off.
• A worse balance of payments, since richer consumers buy more imports.
• Stress and longer working hours for some workers.
• Structural unemployment, because growth changes which industries succeed, and workers in declining industries may lack the skills to move.

Sustainable growth means growth that meets people's needs now without damaging the ability of future generations to meet theirs. Distinguishing growth that comes from using up resources from growth that comes from higher productivity is the strongest evaluation point in this topic.

Worked example

A country's real GDP grows by 4% in a year, while its population grows by 1%.

1. Real GDP per capita has grown by roughly 4% − 1% = 3%
2. so the average person is genuinely better off
3. higher incomes mean more spending
4. firms expand and hire more workers, so unemployment falls
5. the government collects more tax at the same rates, and can spend more on healthcare and education.

But there are costs:

• Higher output means more energy used and more pollution, costs falling on everyone, including future generations.
• If the economy is already near full capacity, the extra demand pushes prices up, causing inflation.
• Richer consumers buy more imported goods, worsening the balance of payments.
• The figure is an average. If nearly all the extra income went to the richest, most people's living standards may not have improved at all.

Evaluation. Whether people are really better off depends on how the gains are shared, whether the growth is sustainable, and whether GDP is measuring the right things at all. GDP does not count unpaid work such as caring for children, ignores the informal economy, and does not subtract the cost of pollution, in fact cleaning up pollution adds to GDP.

Judgement: 3% growth per person is a genuine improvement, but the figure alone does not prove living standards have risen for most people. Distribution and sustainability matter as much as the rate.

Common exam mistakes

• Using nominal GDP to discuss growth. Always specify real GDP.
• Forgetting population, total GDP can rise while GDP per capita falls.
• Saying one quarter of falling output is a recession; it takes two quarters in a row.
• Saying growth always makes everyone better off, ignoring distribution.
• Treating growth as automatically bad for the environment, without distinguishing growth from productivity and growth from using up resources.
• Listing costs and benefits without reaching a judgement.

Exam technique

Define growth precisely as "an increase in real GDP", the word real is often worth a mark on its own.

When data is given, do the subtraction: real growth minus population growth gives the change in GDP per capita, which is what living standards depend on.

For "do the benefits of growth outweigh the costs", organise by who is affected, households, firms, the government, the environment, future generations, and conclude on distribution and sustainability rather than on growth in general.

Quick revision

• GDP = total value of goods and services produced in a year.
• Economic growth = a rise in real GDP. Real removes inflation; per capita divides by population.
• Causes of growth: more resources, better resources, investment, higher demand.
• Cycle: boom → downturn → recession → recovery.
• Recession = two quarters in a row of negative growth.
• Benefits: higher incomes, more jobs, more tax revenue, less poverty, more investment.
• Costs: inflation, pollution, using up resources, inequality, worse balance of payments, structural unemployment.
• Sustainable growth does not damage future generations' ability to meet their needs.
• GDP ignores unpaid work, the informal economy and pollution.

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